Carrier



Manch 4 1924. l,485,533

` w. G. BEATTY CARRIER 3 Sheets-Sheet March 4 1924.

w. G. BEATTY CARRIER Filed Jan.v4, -1922 4s sheets-sheet 2 RMS.

Rarch 4, 1924o W- G- BEATTY ACARRIER Filed Jan. v14:, 1922 5Sheets-Sheet 5 CII lwatented Mar. 1-, i924.

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Application filed January 4, 1922.

To all whom t may concern.'

Be it known vthat I, VILLIAM Grnonon Bnlrrrr, a British subject, andresident of the town of Fergus, in the county of T'Vellington andProvince of ntario, Dominion of Canada, have invented certain new anduseful lmproveiuents in Carriers; and hereby declare that the followingis a full, clear, and exact description of the same.

Hy invention relates to that type of carrier in which the rope grippingjaws open and close in parallel planes and are actuated by anoscillatory lock whose movement for the closing of the jaws iscontrolled by a detent and tripping lever; and it relates moreparticularly to the construction and operation of the detent controllingthe oscillation of the lock for the closing of the jaws, and to theconstruction of the tripping lever actuating the detent.

In my Patent No. 1,367,653, a rocking detent is employed to engage thelock and control its oscillation for the closing ofthe rope grippingjaws which, owing to the limitation of its rocking movement, must beaccurately ground to properly function, as otherwise it fails to releasethe lock if insufliciently ground and fails to hold it if overground.

In the same patent the tripping lever for releasing the detent from thelock, consists of a single lever arm fulcrumed at one end to the frameof the apparatus and provided at the other end with a relativelystationary rope guide which in the practical use of the carrier causesthe abrasion of the hoisting rope when running over the hoisting pulley.

vMy present invention is directed to these two features of the apparatusand has for.

its objects (a.) To provide the lock with a reciprocating detent, soconstructed that it will, regardless of the accuracy of its manufacture,positively engage the lock and prevent its oscillation when maintainingthe rope gripping jaws in their open position, and positively releasethe lock for the closing movement of the aws when actuated by thetripping lever; and

(o) To provide the tripping lever with a rope guide which willautomatically adapt itself to the lateral movement of the hoisting ropewhen running over the hoisting pulley as hereinafter set forth andparticularly pointed out in the claims.

Serial No. 527,028.

ln the drawings Fig. l is a side elevational view of the carrier withthe lock oscillated to open the rope gripping jaws for the run of thehoisting rope.

Fig. 2 is a sectional elevational view of the same with the car omittedand the lock oscillated to close the rope t,ripping jaws on the hoistingrope.

Fig, 3 is a fragmentary sectional end elevational view showing theconstruction of the detent with the lock in the same position as in Fig.l.

Fig. et is a similar view to Fig. 3 with the lock in the same positionas in Fig. 2.

Fig. 5 is a sectional plan view of the tripping lever and rope guide.

Fig. 6 is a fragmentary detail view of the lock and detent with theparts in the position shown in Fig. 3, and

Fig. 7 is an end 'elevational view of the lock in the position shown inFig. 6.

Like characters of reference refer to like parts throughout thespecification and drawings.

As the general construction of the carrier is similar to thev disclosurein `my United States patent above referred to, it will not be necessaryto describe it in detail further than so far as the parts relate to thisinvention.

The rock shaft g is journalled in the frame a and is provided with acrank g having an eye g to which is connected one end of the hoistingrope CZ. Mounted on the rock shaft g is a lock L controlling the openingand closing movement of the rope gripping javs r, r. This lock is of anyusual or approved type and its upwardly extending forks it', it aresymmetrically arranged on opposite sides of its transverse axis.

Extending laterally from the sides of the lock at approximately thebottom of the forks are two curved webs h3 terminating in downwardlyextending detent shoulders Gpposed yto the lock 71, is the detent l7'which controls its oscillation for the closing movement of the ropegripping jaws. Extending laterally from theupper part of the sides ofthe detent are guides jt entered in corresponding vertical guideways oon the inner surfaces of the frame a. At the lower end of the detent isa transversely arranged hub j for the hinge bolt o, which extendsthrough the lugs or llO flanges /t of the tripping lever and hingedlyconnects thc detent and tripping lever together. ln the upper end of thedetent is an aperture or through slot of such dimensions as will permitof the fork L, the webs h3 and detent shoulders 7L, moving freelythrough it during the oscillation oit the lock. ln the preferredconstruction the detent consists ci an apertured plate in which theaperture or through slot occupies the greater portion ot the upper partot its structure and is contracted to approximately the width of the'fork/l. where the slot extends through the top of the detent. rllhisarrangement provides the detent with two detent members j which engagethe detent shoulders lt" oit the lock when the later is oscillated tomaintain the rope gripping jaws in their open position.

The depth oi the detent shoulders h4 is proportioned to the liftingmovement of the detent and the width of the shoulders is such as toextend beyond the sides of the through slot js and engage the detentmembers j when the lock is oscillated to open the rope gripping jaws 7",r. When the jaws r, r are open the detent and tripping lever, as shownin Figs. l, 3 and 6, are at the limit of their downward movement withthe members j engaging the detent shoulders h4 and preventing theoscillation of the loclr for the closing movement of the jaws until thetripping lever has been actuated to disengage the members j from thedetent shoulders.

The tripping lever K is tulcrumed at Z to the frame t and extends fromits ulcrum to a point below the detentj. lin the tripping lever 7c,below the detent j is a transverse slot e, and pivoted at m3 to theunder side of the tripping lever 76, between its fulcrum Z and the slotc, is one end of an oscillating guide arm m. Extending from the guidearm m through the slot c is a bolt m having a washer m engaging theupper side of the tripping lever /c and overlapping the edges of theslot c. The pivot m3 oscillatingly connects the guide arm m to the guidetripping lever it' and the bolt fmt', washer m and slot e provide forthe oscillating movement et the guide arm between the positions shown infull and dotted lines in Fig. 5. In the guide arm fm is a rope guide m4for the hoisting rope d in its run to the hoisting pulley o and ropegripping jaws r, r. rFhe hoisting pulley 0 is swivelled to the frame ato automatically adapt itself to the inclination of the hoisting rope(Z.

During the run of the hoisting rope through the rope guide m4 to thehoisting pulley, the guide arm m automatically adapts itself to theinclination of the rope and overcomes, to a great extent, the abrasionor Wear of the rope heretofore resulting from passing through animmovable guide. l/Vhen the load is lifted to the limit or its movement,the sling pulleys D come into contact with the guide arm m and lift thetripping lever and detent to the limit of their upward movement, thislimit of movement being siiiiicieiit to release the detent members j ofthe detent from the detent shoulders 7b4 of the lock. When the detentmembers j are released from the shoulders 72,4 the lock oscillates intothe position shown in Figs. 2 and Ll this oscillation of the lock being`caused by the weight ot the load on the crank g of the rock shaft g.

During the oscillation oi' the lock into the position shown in Figs. 2and t the 'forli h', webs 7b3 and detent shoulders move through the slotand the curved webs h3 ride against the under side of the detentmembersj and lift the detent and tripping lever into the position shown in Fig.2 and the oscillation of the lock closes the jaws 7", r on the hoistingrope. lWhen the 'fork L engages the stop block p the lock oscillatesinto the position shown in Figs. l and 5 and the detent and the trippinglever then move to their limit of movement in a downward direction tothe position shown in Fig. 3, in which position the detent members jengage the shoulders h4', and prevent the oscillation of the lock untilthe tripping lever is again actuated.

rlhe sides of the detent are provided with lugs l7'5 below the guidesy'4 and spaced therefrom, and the frame a is provided with side bars jextending through the space vbetween the lugs j5 and guides j4, thisspace being equal to the movement of the detent to clear the detentshoulders l# for the oscillation of the lock. This construction providesa convenient means for limiting the movement ot the detent and trippinglever when actuated to release the lock for its oscillation during theclosing of the jaws and when returning to a normal position when thelock is actuated to again open the aws.

For the manual operation of the detent, the frame is provided with agrooved idler t and a pull rope s connected to the detent and passedover the idler.

Passing through the frame (I, at the opposite end to the rock shaft g isa bolt r2 and in front of this bolt is a second bolt r3. Suspended fromthe bolts r2, r3 are two sets of links r4 715 each of which has two setsof eyes frs fr? in oblique alignment to receive the pintles rf* r of therope gripping aws fr 1" which owing to this construction open and closein parallel planes. Pivotally connected to the links r4 is a U- shapedcoupling member rm having an axial bore r through its head T12 fort-hedraw bar T13.

One extremity of the draw bar is of hookshaped formation and engages inan eye lid iframes T14 in the lock 7L and the other extremity isscrew-threaded and extends through the bore 1".

The screw-threaded extremity of the draw-bar is provided with adjustingnuts r1 r1 arranged on opposite sides of the head w12 to regulate theclosing movement of the jaws to the size of the hoisting rope. Forexample, the nuts can be positioned to adjust the jaws to close tightlyagainst a hoisting rope of the smallest size or they can be adjusted toclose tightly against a rope of the largest sizeV or they can beadjusted to close tightly against a rope of 'any size intermediate thelargest and smallest sizes.

When the hoisting rope elevates the-sling pulleys to engage the guidearm m and actuate the tripping lever, the latter lifts the detent clearof the shoulders 7b4. The lock L, under the weight of the load on thearm g', then oscillates to the position shown in Fig. 2 and closes therope gripping jaws, and remains in this position until it comes intoengagement with the stop block p which turns into the posit-ion shown inFig. l in which position it is engaged and held by the detent. In thislatter position of the lock the rope gripping jaws are open and thehoisting rope is free to run. The stop block is stationarily fixed tothe track at the loading position.

Having thus fully described my invention, what I claim as new and desiret secure by Letters Patent is z# l. A carrier comprising rope grippingjaws, an oscillatory lock 'for opening and closing said jaws, and areciprocating detent co-acting with and engaging the loch for holdingthe jaws in their open position and apertured for the movement of thelock therethrough during its oscillations, said aperture being sopositioned in the detent as to be out of line with the lock when thedetent is reciprocated to engage the lock and prevent its oscillationwhile the jaws are in their open position and to be in the path of thelock when the detent is reciprocated to release the lock for itsoscillation between the jaw opening and closing positions.

2. A carrier comprising rope gripping jaws, an oscillatory lock foropening and closing said jaws, and a reciprocating detent co-acting withand engaging the lock for holding the jaws in their open position andapertured for the movement of the lock therethrough during itsoscillations, said aperture being so positioned in the detent as to beout of line with the loch when the detent is reciprocated to engage thelock and prevent its oscillation while the jaws are in their openposition and to be in the path of the lock when the detent isreciprocated to release the lock for its oscillation between the jawopening and closing positions, and means Yfor actuating the detent.

3. A carrier comprising rope gripping jaws, an oscillatory loch foropening an closing said jaws, and a reciprocating detent co-acting withand engaging the lock for holding the jaws in their open position vandapertured for the movement of the lock therethrough during itsoscillations, said aperture being so positioned in the detent as to beout of line with the lock when the detent is reciprocated to engage thelock and prevent its oscillation while the jaws are in their openposition and to be in the path of the locl when the detent isreciprocated to release the lock for its oscillation between the jawopening and closing positions, and a tripping lever fulcrunied to thecarrier and connected with the detent.

4. A carrier comprising rope gripping jaws, an oscillatory loch foropening and closing said jaws, and a reciprocating detent co-acting withand engaging the lock for holding the jaws in their open position andapertured for the movement of the lock therethrough during itsoscillations, said aperture being so positioned in the detent as to beout of line with the lock when the detent is reciprocated to engage thelock and prevent its oscillation while the jaws are in their openposition and to be in the path of the lock when the detent isreciprocated to release the lock for its oscillation between the jawopening and closing positions, and guide-ways for the reciprocatingmovement of the detent.

5. A carrier comprising an oscillatory lock having a detent surface7 apairy of rope gripping jaws, opened and closed by the lock, areciprocating detent apertured for the oscillation of the lock andprovided with a detent member engaging the detent surface of the lockwhen oscillated to maintain the rope gripping jaws in an open position,and means actuating the detent and releasing its detent member from thedetent surface of the lock for its oscillation through the aperture toclose the rope gripping jaws.

6. A carrier comprising an oscillatory lock having a detent surface, apair of rope gripping jaws, opened and closed by the lock, areciprocating detent apertured for the oscillation oit' the lock andprovided with a detent member engaging the detent surface of the lockwhen oscillated to maintain the rope gripping jaws in an open position,and a tripping lever actuating the detent and releasing its detentmember from the detent surface of the lock Jfor its oscillation throughthe aperture to close the rope gripping jaws.

7. A carrier comprising an oscillatory lock having a detent surface, a.pair of rope gripping jaws, opened and closed by the lock, areciprocating detent apertured for the oscillation of the lock andprovided with a detent member engaging the detent surface oit' the lockwhen oscillated to maintain the rope gripping jaws in an open position,a tripping lever actuating the detent and releasing its detent memberfrom the detent surface of the lock for its oscillation through theaperture to close the rope gripping jaws, and means liingedly connectingthe detent with the tripping lever.

8. A carrier comprising an oscillatory lock, a pair of rope grippingjaws opened and closed by the lock, a reciprocating detent engaging theloclr when oscillated to maintain the rope gripping jaws in an openposition, a tripping lever actuating the detent and releasing it fromthe lock for its oscillation to close the rope gripping jaws, and stopslimiting the reciprocating movement of the detent.

9. A carrier comprising an oscillatoryT lock having curved websextending laterally from its sides and terminating in detent engagingshoulders, a pair of rope gripping jaws opened and closed by the lock, areciprocating detent apertured for the oscillation of the lock andprovided with a detent inember engaging the detent shoulders of the lockwhen oscillated to maintain the rope gripping jaws in an open position,and means actuating the detent and releasing it from the lock for itsoscillation to close the rope gripping jaws.

10. A carrier comprising an oscillatory lock having curved webseXtending laterally from its sides and terminating in detent engagingshoulders, a pair ott rope gripping jaws opened and closed by the lock,a reciprocating detent apertured for the oscillation of the lock andprovided with a detent meinber engaging the detent shoulders of the lockwhen oscillated to maintain the rope gripping jaws in an open position,and a tripping lever actuating the detent and releasing it from the lockfor its oscillation to close of the rope gripping jaws.

ll. A carrier comprising a tripping lever consisting of an arm fulcrumedat one end to the carrier, an oscillating arm pivoted at one end to thelever arm and provided at the other end with a rope guide, and a slidingconnection between the oscillating arm and the lever arm. v

12. A carrier comprising a tripping lever consisting of an arm tulcrumedat one end to the carrier and formed with a transverse slot, anoscillating arm .pivoted at one end to the lever arm and provided at theother end with a-rope guide, and a sliding connection between theoscillating arm and the lever arm extending through said slot.

13. A carrier comprising a tripping lever consisting of an arm fulcrumedat one end to the carrier and formed with a transverse slot, anoscillating arm pivoted at one end to the lever arm and provided at theother end with a rope guide, a sliding connection between theoscillating arm and the lever arm extending through said slot, anoscillatory lock, and a reciprocating detent for the lock actuated bythe tripping lever.

Dated at the said town of Fergus, this 20th day of December, A. D. 1921.

TNILLAM GEORGE BEATTY.

Witnesses:

J. A. WILSON, STANLEY RIoHEs.

